KR20210087589A - Door for vehicle - Google Patents

Abstract

A door for a vehicle is disclosed. According to one embodiment of the present invention, the door for a vehicle enables a plastic resin to be introduced through a through-hole in a reinforcement bracket inserted into a window frame unit to increase structural bonding force and forms various ribs and bosses to secure structural rigidity to prevent separation of the reinforcement bracket by distortion when injection molding of a door module assembled between a door trim and a door panel. More specifically, a space is filled with the plastic resin between the ribs of a portion requiring the structural rigidity.

Description

Vehicle door {DOOR FOR VEHICLE}

The present invention relates to a vehicle door, and more particularly, to a vehicle door which increases structural rigidity by insert injection molding a reinforcement bracket into a window frame portion of a door module assembled between a door trim and a door panel.

In general, a door for a vehicle is provided with a door glass in order to improve air permeability of a vehicle interior, visibility of an occupant, and habitability, and is made of a steel material or an aluminum material in consideration of collision stability.

In such a vehicle door, a door outer panel made of a steel or aluminum material and a door inner panel are coupled to each other to form a door panel constituting a door frame, and a window frame is coupled to an upper portion of the door panel to guide the door glass.

In the inner space formed by combining the door outer panel and the door inner panel, a glass module equipped with a guider, an actuator, etc. for elevating and lowering the door glass is built-in.

In addition, a door trim in which a door latch or a window switch is installed is coupled to the door inner panel, and an impact beam is installed to correspond to the door outer panel in order to increase the side impact rigidity of the door.

Such a conventional vehicle door adds weight to the overall door as the window frame and the guider of the glass module assembled to the door inner panel are made of steel, and as the window frame and the glass module are separately manufactured, the number of manufacturing labor and parts In recent years, as in the following prior art literature, more innovative vehicle doors are being developed by reducing the number of door parts and reducing material weight.

Republic of Korea Patent Publication No. 10-2019-0068672 (published date: 2019.06.19) That is, the vehicle door of the prior art document can reduce the number of parts of the door by making a number of parts constituting the door into a door module, and can reduce the weight by manufacturing some door modules with a relatively lightweight material instead of a steel material. A first door module consisting of a door outer panel (1), a door inner panel (2), a door frame (3), and an impact beam (4), It includes a second door module 5 made of a lightweight material and a door trim 6 as a third door module. The door outer panel 1 is disposed outside the vehicle compartment and is formed in a complete panel shape in consideration of door rigidity and appearance, whereas the door inner panel 2 is disposed inside the vehicle compartment and has an opening 21 in the center Thus, the weight and cost are reduced. The second door module 5 is made of a relatively lightweight material, for example, a plastic material, compared to the first door module, and a panel-shaped module body 51 and a door window forming the door window 52 . A portion 53 (window frame portion) is integrally formed. However, in the vehicle door of the prior art document as described above, the window frame portion, which is the door window portion 53, is made of a lightweight plastic composite material together with the module body 51, steel or other non-ferrous metals, etc. is formed by inserting a reinforcing bracket of , but there is a disadvantage in that the fastening force is lowered due to the heterogeneity of the material between the window frame made of a composite material and the reinforcing bracket made of steel or non-ferrous metal. In particular, there is a disadvantage in that the reinforcing bracket insert-molded inside the window frame part is separated or separated from the window frame part while a torsional or bending force is applied by an external force. Matters described in this background section are prepared to enhance understanding of the background of the invention, and may include matters that are not already known to those of ordinary skill in the art to which this technology belongs.

In an embodiment of the present invention, when injection molding a door module assembled between a door trim and a door panel, the plastic resin can be introduced through a through hole into a reinforcement bracket inserted inside the window frame to structurally increase bonding strength and At the same time, an object of the present invention is to provide a door for a vehicle that forms various ribs and bosses to secure structural robustness and prevents separation of the reinforcement bracket by torsion.

An embodiment of the present invention is to provide a vehicle door that prevents deformation by reinforcing bending rigidity by filling the space between the ribs of a portion requiring structural rigidity by using a plastic resin.

In one or more embodiments of the present invention, a door panel configured by bonding a door outer panel and a door inner panel to each other, a module body portion and a window frame portion are integrally injection-molded to be coupled to the inner side of the door inner panel A vehicle door comprising a module and a door trim coupled to an inner side of the door module, wherein the window frame part includes a window glass frame part supporting an upper portion of the window glass, and a quarter glass upper frame supporting the upper portion of the quarter glass It is divided into a part, a quarter glass front frame part supporting the front end of the quarter glass, an inside belt frame part to which the inside belt is assembled, and a pillar frame part for guiding the raising and lowering of the window glass, inside each part Injection molding with an integrated reinforcement bracket inserted, but each part except for the inside belt frame part is filled with plastic resin through a plurality of through holes formed on the cross section of the reinforcement bracket, and a plurality of rib structures made of plastic resin is fixed and injection-molded, and the inside belt frame part is insert-injection-molded at the upper end and lower end of the reinforcing bracket of the corresponding part inside the module body, through-holes formed in a plurality of locations in the longitudinal direction of the reinforcing bracket A vehicle door that is injection-molded so that a plurality of fixed ends are formed through which a plastic resin is introduced and fixed, the module body part and the reinforcing bracket are coupled and fixed, and the inner surface of the reinforcing bracket is exposed may be provided.

The reinforcing bracket may be made of a molded product of steel or non-ferrous metal.

The window glass frame part may include a transverse rib protruding in a longitudinal direction on an inner surface thereof, and a plurality of inclined ribs protruding obliquely while crossing in both directions on the transverse rib.

Also, in the window glass frame part, an intersection point may be formed by diagonally crossing two inclined ribs on the horizontal rib, and a circular boss may be formed at the intersection point.

In addition, the window glass frame part crosses the upper and lower parts along the longitudinal direction with respect to the horizontal ribs in the space partitioned by the horizontal rib and the two inclined ribs in the longitudinal direction so that the reinforcing bracket is not partially exposed. It can be filled and injection molded.

The quarter glass upper frame part may include a horizontal rib protruding along the longitudinal direction on an inner surface thereof, and a plurality of inclined ribs protruding obliquely while crossing in both directions on the horizontal rib.

In addition, in the upper frame part of the quarter glass, an intersection point may be formed by diagonally crossing two inclined ribs on the horizontal rib, and a circular boss may be formed at the intersection point.

In addition, the quarter glass upper frame part may be injection-molded by filling the entire space divided by the horizontal rib and the two inclined ribs with a plastic resin so that the reinforcing bracket is not exposed.

The quarter glass front frame part may have lattice ribs protruding in a square grid pattern shape on an inner surface thereof.

In addition, the quarter glass front frame part may be injection-molded by filling a plastic resin so that the reinforcing bracket is not partially exposed in the space partitioned by the grid ribs.

The pillar frame part includes a longitudinal rib protruding along the longitudinal direction on the inner surface, a plurality of inclined ribs protruding obliquely while crossing in both directions on the longitudinal rib, and a plurality of transversely protruding ribs intersecting on the longitudinal rib. Transverse ribs may be formed.

In addition, the filler frame part is injected such that both lower ends of the reinforcement bracket are inserted and fixed inside the window frame part, and the inner surface of the reinforcement bracket is exposed while being supported by the vertical ribs, the inclined ribs, and the horizontal ribs. can be molded.

The window frame part may further include a filler edge frame part formed only of plastic resin to connect the window glass frame part and the filler frame part, and injection-molded by forming edge ribs protruding from an inner surface.

The vehicle door according to an embodiment of the present invention is structurally structured by allowing plastic resin to flow through a through hole into a reinforcement bracket inserted inside the window frame during injection molding of a door module assembled between a door trim and a door panel. It increases bonding strength, and forms various ribs in the horizontal, vertical and diagonal directions, and bosses at the intersections of each rib to secure structural rigidity and increase bending and torsional rigidity, which allows the reinforcement bracket to be separated from the window frame can be prevented or escaped.

According to an embodiment of the present invention, by using a plastic resin to fill the space between each rib of a portion requiring structural rigidity, it is possible to strengthen bending rigidity and prevent deformation due to external force.

1 is a perspective view of a vehicle door to which the present invention is applied.
2 is an exploded perspective view of a vehicle door to which the present invention is applied.
3 is an exploded perspective view of a door module and a reinforcing bracket of a door for a vehicle according to an embodiment of the present invention.
4 is an enlarged view of a window frame of a door module of a vehicle door according to an embodiment of the present invention.
5 is an enlarged view of a portion S1 of FIG. 4 and a cross-sectional view taken along lines AA and BB.
6 is an enlarged view of a portion S2 of FIG. 4 and a cross-sectional view taken along lines CC and DD.
7 is a cross-sectional view taken along lines EE and FF of FIG. 4 .
8 is an enlarged view of portions P5 and P6 of FIG. 4 .

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are given to the same or similar elements throughout the specification.

Since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the bar shown in the drawings, and the thickness is enlarged to clearly express various parts and regions.

And, in the following detailed description, the reason for dividing the names of components into first, second, etc. is to distinguish them due to the same relationship, and it is not necessarily limited to the order in the following description.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

1 is a perspective view of a vehicle door to which the present invention is applied, FIG. 2 is an exploded perspective view of a vehicle door to which the present invention is applied, and FIG. 3 is an exploded perspective view of a door module and a reinforcement bracket of a vehicle door according to an embodiment of the present invention to be.

1 to 3 , a door for a vehicle according to an embodiment of the present invention includes a door panel 10 , a door module 20 , and a door trim 30 .

The door panel 10 is composed of a door outer panel 11, a door inner panel 13, and an impact beam 15. The door outer panel 11 is disposed outside the vehicle body, and the door rigidity and appearance are improved. In consideration of this, it is formed in the shape of a single panel, and the door inner panel 13 is disposed inside the vehicle compartment and forms an opening 13a in the center to reduce weight and cost.

The door outer panel 11 and the door inner panel 13 may be formed of a metal material such as steel, and the impact beam 15 is disposed to correspond to the door outer panel 11 , and both ends of the door inner panel It is bonded to the panel 13 and functions to protect the occupants inside the vehicle by absorbing the shock in the event of a side collision.

In this way, the door panel 10 is a state in which both ends of the impact beam 15 are bonded to the door inner panel 13, and hemming along each edge of the door inner panel 13 and the door outer panel 11, etc. It can be completed by bonding through the bonding process of

The door module 20 may be manufactured by insert injection molding an integral reinforcement bracket (reinforcement) made of steel or non-ferrous metal into a composite material made of a lightweight plastic resin.

Referring to FIG. 3 , the door module 20 is integrally injection-molded with a panel-shaped module body 21 and a window frame part 23 guiding door glass (not shown), and the window frame part Reference numeral 23 indicates a structure in which the reinforcing bracket 25 is insert injection-molded together and fixed to the module body 21 during injection molding, and is configured to secure structural rigidity.

The door module 20 is coupled to the door inner panel 13 of the door panel 10, and a door glass (not shown) and an actuator (not shown) on the inner space formed between the door inner panel 13 and the door inner panel 13 . Elevating units such as (not shown), wire (not shown), guider (not shown) are configured to open and close the door glass (not shown) with respect to the window frame.

Referring to FIG. 2 , the door trim 30 is coupled to the door module 20 through a coupling unit and has functions such as interior decoration as well as sound insulation, suction, and passenger protection in case of a collision, and a door locking device. (31), the window switch 33, the speaker 35 and the like are configured, and the arm rest 37 and the like can be integrally molded.

4 is an enlarged view of a window frame of a door module of a vehicle door according to an embodiment of the present invention, FIG. 5 is an enlarged view of a portion S1 of FIG. 4 and a cross-sectional view taken along lines AA and BB, FIG. 6 is a view of FIG. An enlarged view of part S2 and a cross-sectional view taken along lines CC and DD, FIG. 7 is a cross-sectional view taken along lines EE and FF of FIG. 4 , and FIG. 8 is an enlarged view of parts P5 and P6 of FIG. 4 .

In the door for a vehicle according to an embodiment of the present invention, the door module 20 includes a module body 21 and a window frame 23, and the window frame 23 has a reinforcing bracket 25 therein. This integrally insert injection molding is made of a structure fixed to the module body (21).

The reinforcing bracket 25 may be made of a press-molded product of steel or non-ferrous metal, and a plurality of through-holes H may be formed on the cross-section to allow the plastic resin S to flow therein.

4, the window frame part 23 is plastic injection-molded with the reinforcing bracket 25 inserted therein. At this time, each part (P1) (P2) of the window frame part 23 ( Reinforcement by filling the space filled with various ribs (R1) (R2) (R3) (R4) (R5), boss (BS), and plastic resin (S) for each P3) (P4) (P5) (P6) It is possible to increase the bonding strength and structural rigidity with the bracket (25).

First, the window frame part 23 includes a window glass frame part (P1), a quarter glass upper frame part (P2), a quarter glass front frame part (P3), an inside belt frame part (P4), and a pillar frame part (P5). , and a pillar edge frame part P6.

Referring to FIG. 5 , the window glass frame part P1 is a part that supports the upper portion of the window glass when the window glass (not shown) is raised, and protrudes in the longitudinal direction on the inner surface toward the inside of the vehicle compartment. It is made by forming two inclined ribs R2 that protrude obliquely while crossing the rib R1 in both directions in an "X" shape on the horizontal rib P1.

At this time, each inclined rib R2 in both directions has an end connected to the end of each inclined rib R1 in the other direction adjacent to it, and together with the horizontal rib R1, the upper part of the horizontal rib R1 is based on and to form a triangular space inside the lower part.

And the window glass frame part P1 forms an intersection point at a point where two inclined ribs R2 cross each other in a diagonal direction on the horizontal rib R1, and a circular boss BS is integrally formed at the intersection point. to form

In addition, the window glass frame part P1 has a longitudinal direction in the upper and lower portions with respect to the horizontal rib R1 in the triangular space divided by the horizontal rib R1 and the two inclined ribs R2. The plastic resin (S) is filled and injection-molded so that the reinforcing brackets 25 are not exposed by crossing them one by one, and the reinforcing brackets 25 are exposed to the outside in the remaining part.

In this way, the window glass frame part (P1) is a reinforcing bracket corresponding to the triangular space filled with the plastic resin (S) together with the horizontal rib (R1), the two inclined ribs (R2), and the boss (BS). On the cross-section of (25), the plastic resin (S) is molded through the through hole (H) in a state in which it is introduced, and the bonding force with the reinforcing bracket 25 and its own rigidity are strengthened.

In addition, in the window glass frame part P1, the transverse rib R1 serves to strengthen the bending rigidity in the longitudinal direction, and the two inclined ribs R2 in the shape of "X" have torsional rigidity in the rotational direction. function to strengthen

Referring to FIG. 6 , the quarter glass upper frame part P2 is a part supporting the upper portion of the quarter glass (not shown), and includes a transverse rib R1 protruding along the longitudinal direction on the inner surface facing the inside of the vehicle compartment. , is formed by forming two inclined ribs R2 that protrude obliquely while crossing in both directions in an "X" shape on the horizontal ribs R1.

At this time, each inclined rib R2 in both directions has an end connected to the end of each inclined rib R1 in the other direction adjacent to it, and together with the horizontal rib R1, the upper part of the horizontal rib R1 is based on and to form a triangular space inside the lower part.

And the quarter glass upper frame part P2 forms an intersection point at a point where two inclined ribs R2 cross each other in a diagonal direction on the horizontal rib R1, and a circular boss BS is integrated at the intersection point. to form with

In addition, the quarter glass upper frame part (P2) is made of a plastic resin (S) so that the reinforcing bracket (25) is not exposed inside the entire triangular space divided by the horizontal rib (R1) and the two inclined ribs (R2). is filled and injection molded.

As such, the quarter glass upper frame part P2 is formed with the horizontal rib R1 and the two inclined ribs R2 together with the horizontal rib R1 and the two inclined ribs R2 and the boss BS. As the plastic resin (S) was filled and molded in the entire triangular space to be partitioned, its own rigidity was strengthened to prevent bending deformation.

Referring to FIG. 6 , the quarter glass front frame part P3 is a part that supports the front end of the quarter glass (not shown), and the lattice ribs ( R3) is formed.

At this time, the quarter glass front frame part P3 is injection-molded by filling plastic resin S so that the reinforcing bracket 25 is not partially exposed inside the rectangular space partitioned by the grid ribs R3 .

In this way, the quarter glass front frame part (P3) is partially filled with plastic resin (S) inside the rectangular space divided by the rectangular grid ribs (R3) and the grid ribs (R3). R3) has a function of firmly supporting the window glass frame part P1 and the quarter glass upper frame part P2 by increasing the rigidity and preventing deformation.

4 and 7 , the inside belt frame part P4 is a part to which the inside belt (not shown) is assembled, and the upper and lower ends of the reinforcing bracket 25 are inside the module body 21 . The insert is injection molded.

At this time, the reinforcing bracket 25 forms a plurality of fixed ends 27 forming a fixed structure by introducing a plastic resin (S) through the through holes (H) at a plurality of locations in the longitudinal direction.

In this inside belt frame part P4, in addition to the reinforcing bracket 25 being fixed to the module body 21 by the fixing ends 27 at a plurality of locations along the longitudinal direction, most of the inner surface facing the inside of the vehicle compartment It is injection molded so that it is exposed.

Accordingly, in the inside belt frame part P4, the upper and lower ends of the reinforcing bracket 25 are insert-molded inside the module body 21, bending deformation due to external force is prevented, and a plurality of fixed ends 27 ) to strengthen the bending rigidity, and to reduce the injection pressure generated on the rear surface of the fixing bracket 25 to improve the moldability and to prevent separation of the reinforcement bracket 25 due to product deformation.

Referring to FIG. 8 , the pillar frame part P5 is a part for guiding the elevating and lowering of the window glass (not shown), and includes a vertical rib R4 protruding in the longitudinal direction on the inner surface facing the inside of the vehicle compartment. , On the vertical rib (R4), two inclined ribs (R2) are formed to protrude obliquely while crossing in both directions in an "X" shape on the lower part, and intersecting in the horizontal direction on the vertical rib R4 on the upper part It is made by forming a plurality of horizontal ribs (R1).

At this time, in the pillar frame part P5, both lower ends of the reinforcing bracket 25 are inserted and fixed inside the window frame part 23, and the inner surface facing the inside of the vehicle compartment is a vertical rib R4 and an inclined rib (R2) and the horizontal ribs (R1) while supported by injection molding so as to be exposed to the outside.

Accordingly, the rigidity of the pillar frame part P5 in the vehicle height direction is improved by the application of the vertical rib R3, and the rigidity of the rib itself is strengthened by the application of the inclined rib R2 and the horizontal rib R1. do.

Referring to FIG. 8 , the window frame part 23 connects the window glass frame part P1 and the pillar frame part P5, and is formed only of plastic resin (S) and faces the inside of the vehicle compartment. An edge rib (R5) that protrudes to is formed.

The edge rib R5 is applied to the upper end portion corresponding to the door pillar (not shown) to strengthen the rigidity of the door edge portion.

In this way, the door for a vehicle according to an embodiment of the present invention having the structure as described above includes the window frame part ( 23) By allowing the inflow of the plastic resin (S) through the through hole (H) to the reinforcement bracket 25 inserted inside, the bonding strength is structurally increased.

In addition, various ribs (R1) (R2) (R3) (R4) (R5) in the horizontal, vertical and diagonal directions for each part (P1) (P2) (P3) (P4) (P5) (P6) And, it is possible to secure structural rigidity by forming the boss (BS) at the intersection of each rib.

Accordingly, it is possible to increase bending and torsional rigidity, and it is possible to prevent the reinforcing bracket 25 from being separated from or separated from the window frame portion 23 .

In addition, the plastic resin (S) is formed to be filled in the triangular or square space between each rib (R1) (R2) (R3) (R4) (R5) of the part where structural rigidity is required to strengthen the bending rigidity, Deformation due to external force can be prevented.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and it can be easily changed by a person skilled in the art from the embodiment of the present invention to equivalent It includes all changes to the extent recognized as such.

10: door panel
11: Door outer panel
13: door inner panel
15: impact beam
20: door module
21: module body part
23: window frame
25: reinforcement bracket
27: fixed end
30: door trim
31: lock
33: window switch
35: speaker
37: arm rest
P1: window glass frame part
P2: Quarter glass upper frame part
P3: quarter glass front frame part
P4: Inside Belt Frame Part
P5: Pillar Frame Part
P6: Pillar Edge Frame Part
R1: transverse rib
R2: inclined rib
R3: lattice rib
R4: vertical rib
R5: edge rib
BS: Boss
H: through hole

Claims (13)

A door panel comprising a door outer panel and a door inner panel joined together; a door module integrally injection-molded with a module body and a window frame portion to be coupled to an inner side of the door inner panel; A door for a vehicle comprising a door trim coupled thereto,
The window frame part includes a window glass frame part supporting the upper part of the window glass, a quarter glass upper frame part supporting the upper part of the quarter glass, a quarter glass front frame part supporting the front end of the quarter glass, and an inside belt It is divided into an inside belt frame part that becomes an inner belt frame part, and a filler frame part that guides the elevation of the window glass, and is injection molded with an integrated reinforcement bracket inserted inside each part,
Each part except for the inside belt frame part is filled with a plastic resin through a plurality of through-holes formed on the cross-section of the reinforcement bracket, and is fixed by a plurality of rib structures made of plastic resin and injection-molded,
As for the inside belt frame part, the upper end and lower end of the reinforcing bracket of the corresponding part are insert injection-molded inside the module body, and the plastic resin is introduced and fixed through through holes formed at a plurality of points in the longitudinal direction of the reinforcing bracket. A vehicle door that is injection-molded to form a plurality of fixed ends to be fixed so that the module body and the reinforcing bracket are coupled and fixed, and the inner surface of the reinforcing bracket is exposed. According to claim 1,
The reinforcement bracket is
A door for a vehicle made of a molded product of steel or non-ferrous metal. According to claim 1,
The window glass frame part
A vehicle door having a horizontal rib protruding along the longitudinal direction on an inner surface, and a plurality of inclined ribs protruding obliquely while crossing the horizontal rib in both directions. 4. The method of claim 3,
The window glass frame part
An intersection is formed by crossing two inclined ribs on the horizontal rib in a diagonal direction, and a circular boss is formed at the intersection. 5. The method of claim 4,
The window glass frame part
A door for a vehicle in which a plastic resin is filled and injection molded so that the reinforcing bracket is not partially exposed by crossing the upper and lower portions of the horizontal rib in the longitudinal direction based on the horizontal rib and the two inclined ribs. According to claim 1,
The quarter glass upper frame part is
A vehicle door having a horizontal rib protruding along the longitudinal direction on an inner surface, and a plurality of inclined ribs protruding obliquely while crossing the horizontal rib in both directions. 7. The method of claim 6,
The quarter glass upper frame part is
An intersection is formed by crossing two inclined ribs on the horizontal rib in a diagonal direction, and a circular boss is formed at the intersection. 8. The method of claim 7,
The quarter glass upper frame part is
A vehicle door in which a plastic resin is filled and injection molded so that the reinforcement bracket is not exposed in the entire space divided by the horizontal rib and the two inclined ribs. According to claim 1,
The quarter glass front frame part is
A vehicle door in which a grid rib protruding in a square grid pattern is formed on the inner surface. 10. The method of claim 9,
The quarter glass front frame part is
A door for a vehicle in which a plastic resin is filled and injection molded so that the reinforcement bracket is not partially exposed in the space partitioned by the grid ribs. According to claim 1,
The filler frame part is
A vertical rib protruding along the longitudinal direction on the inner surface, a plurality of inclined ribs protruding obliquely while crossing in both directions on the vertical rib, and a plurality of horizontal ribs protruding to intersect in the horizontal direction on the vertical rib are formed for a vehicle door. 12. The method of claim 11,
The filler frame part is
The lower both ends of the reinforcing bracket are inserted and fixed inside the window frame, and the inner surface of the reinforcing bracket is injection molded to be exposed while being supported by the vertical ribs, the inclined ribs, and the horizontal ribs. According to claim 1,
the window frame
a filler edge frame part formed only of plastic resin to connect the window glass frame part and the filler frame part, and injection-molded by forming edge ribs protruding from an inner surface;
A vehicle door further comprising a.

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